<template>
  <div class="article-page">
    <nav class="my-nav van-hairline--bottom">
      <a
        href="javascript:;"
        :class="{ active: sorter === 'weight_desc' }"
        @click="changeSorter('weight_desc')"
        >推荐</a>
      <a
        href="javascript:;"
        :class="{ active: sorter === '' }"
        @click="changeSorter('')"
        >最新</a>
      <div class="logo"><img src="@/assets/logo.png" alt=""></div>
    </nav>
    <van-list
    v-model="loading"
    :finished="finished"
    finished-text="没有更多了"
    @load="onload">
    <article-item :atc="item" v-for="item in rows" :key="item.id" />
    </van-list>
  </div>
</template>

<script>
import { getArticles } from '@/api/article'
export default {
  name: 'article-page',
  data () {
    return {
      rows: [],
      loading: false,
      // 是否全部加载完毕
      finished: false,
      current: 1,
      sorter: 'weight_desc'
    }
  },
  methods: {
    async onload () {
      const res = await getArticles({
        current: this.current,
        pageSize: 10
      })
      this.rows.push(...res.data.data.rows)

      // 将 loading 设置为 false
      this.loading = false

      // 加载完毕后让 current 自增
      this.current++

      // 加载状态结束
      this.loading = false

      if (this.current > 8) {
        this.finished = true
      }
    },
    changeSorter (sorter) {
      // 修改排序方法
      this.sorter = sorter
      // 重新发起请求
      // 重置状态, 为了获取数据的时候是不受前面影响的
      this.rows = []
      this.current = 1
      this.finished = false
      this.loading = true
      // 调用方法发送请求
      this.onload()
    }
  }
  // async created () {
  //   const arr = await getArticles({
  //     current: this.current,
  //     pageSize: 10
  //   })
  //   console.log(arr.data.data.rows)
  //   this.list = arr.data.data.rows
  // }
}
</script>

<style lang="less" scoped>
.article-page {
  margin-bottom: 50px;
  margin-top: 44px;
  .my-nav {
    height: 44px;
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    z-index: 999;
    background: #fff;
    display: flex;
    align-items: center;
    > a {
      color: #999;
      font-size: 14px;
      line-height: 44px;
      margin-left: 20px;
      position: relative;
      transition: all 0.3s;
      &::after {
        content: '';
        position: absolute;
        left: 50%;
        transform: translateX(-50%);
        bottom: 0;
        width: 0;
        height: 2px;
        background: #222;
        transition: all 0.3s;
      }
      &.active {
        color: #222;
        &::after {
          width: 14px;
        }
      }
    }
    .logo {
      flex: 1;
      display: flex;
      justify-content: flex-end;
      > img {
        width: 64px;
        height: 28px;
        display: block;
        margin-right: 10px;
      }
    }
  }
}

</style>
